You can use Game Defragment to rearrange your game files stored on the disk to occupy contiguous storage locations, a technique called defragmentation. Defragmenting a disk minimizes head travel, which reduces the time it takes to read files from and write files to the disk, this will improve games startup and loading performance.
Unlike the default Windows disk defragmentation utility which defrags the whole partition and do not offer an option to only defrag certain folders, Game Defragment can only defrag certain folders for example game folders without the need to defrag the whole partition thus speedup the defragmentation process.
DO NOT defrag game files stored on solid state drives (SSD) as it may reduce the drive lifespan.
To start Game Defragment, in My Games select the game you want to optimize its files, right click and choose Defrag Game Files. Game Defragment will show up and start analyzing game files to determine progress then it will processed with the defragmentation process.
The defragmentation process may take several minutes depending on the size, number and degree of fragmentation of the selected game files.
When game defragment is finished, it will display a report about the number of files processed, files defragmented, and level of fragmentation.